Perhaps you should try some spelling variations:
"teaching contributions using java programing" » "training contributions using java programing" (Expand search), "teaching conditions using java programing" (Expand search), "teaching conceptions using java programing" (Expand search), "teaching contributions during java programing" (Expand search), "teaching contributions in java programing" (Expand search), "teaching distributions using java programing" (Expand search), "teaching contributions using java programming" (Expand search), "teaching contributions using java programs" (Expand search), "teaching contributions using meta programming" (Expand search)
"using coding python python programming" » "using codigo python python programming" (Expand search), "using codigos python python programming" (Expand search), "using using python python programming" (Expand search), "using coding pythons python programming" (Expand search), "using coding piton python programming" (Expand search), "using coding pitons python programming" (Expand search), "using coping python python programming" (Expand search), "using coating python python programming" (Expand search), "using cooking python python programming" (Expand search)

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"teaching contributions using java programing\") OR (\"using coding python python programming\"))~".
• Removing quotes may allow a broader search: (( teaching contributions using java programing ) OR ( using coding python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("teaching contributions using java programing") OR ("using coding python python programming"))*.